What are you seeing?
I know that those 3D images come in two flavours. One parallel vision and the other crossed-eyed. Most are like the one in the booklet and are parallel vision. It's a long time since I've looked at that image, but it does say photoread.
Try the looking at your feet (or a distance spot) and bring the book up infront of you, while maintaining your focus on the distance object.
Sending love,
Iam2 
